[ It seems that I missed the original post, so I'll just use this one to
reply to. ]
On Thu, 9 Oct 2003, Amey Dharurkar wrote:
> On Wed, 8 Oct 2003, Raheel Ahmad wrote:
> > Hello,
> > This may seem like a trivial question but I could not get a convincing
> > answer any where so I had to ask. I have a cluster with all the nodes
> > directly connected to a Cisco Catalyst 3500 switch. Everything runs fine.
> > However, how do I know what topology the switch itself is using? Basically I
> > want to test the cluster with different topoligies like ring, mesh,
> > hypercube. Is there anyway I could do that using the switch?
> > Thank you.
Any switch produced nowadays comes configured from the factory to work in
a star topology. Depending on the internals it might actually be divided
into several stars with fast (but sometimes not fast enough) links between
them.
Some of the topologies require each node to have several links; you do not
specify how many network cards there are in each node. However with a bit
of imagination and work, one could use IP aliases on the network cards and
VLANs on the switch to simulate additional connections with only one
network card per node, but this would work only as a simulation and not if
you are interested in performance.
--
Bogdan Costescu
IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu_at_[hidden]
|
